It's designed with the concave-Hop concept in the sense of the longer contact patch and more concave. Using heavier rounds and setting the hop up well, it will have remarkable range increases, as well as fps. Reason being that with the long contact patch nub, it can't effectively allow the bucking to deform to fit the bb's profile as it gets squeezed through the bucking, it tends to allows pellets to fly farther and fall less.
